I am building out a E- series Ford van for camping. I plan on installing Will's Classic 400 Watt w/ Alternator Charging now (van is currently stripped out ). Due to my needs and budget I thought I would start with 2@ 100watt panels, and maybe a Solar Generator rather than a battery. The reasons for this are the portability of a generator and budget. Since I want to use this as a Camping Van, I may not want to keep an expensive battery onboard all the time when not in use. I am also considering a suitcase Solar panel setup for the same reason. I am wondering I could install the Classic 400 watt system minus the inverter, battery and roof mounted panels, but plan space for a later expansion into an inverter, battery and panels as my money and needs arise. Meanwhile, when I am not camping I could have the use of the Solar generator and panels in other places. What do you think? Could I latter mount an additional 200 Watts Panels to the roof, add a battery and 2000 PS wave inverter that works together with the solar generator? How could the batteries work together and is there a way to have a 2000 Watt Inverter run on that new system, bypassing the generator invertor? As I said, I need advice!